The use of Ethernet in long-term programs helps to minimize risks of technology and component obsole

The use of Ethernet in long-term programs helps to minimize risks of technology and component obsolescence. There are no other system integration technologies on the market with such continuing industry momentum and guaranteed growth. Ethernet enjoys tremendous support in different commercial and industry applications, however, a limitation to its use in critical embedded systems is its capability for deterministic communication with mixed time-criticality, and continuous synchronization tolerant to different fault scenarios. f 14 tomcat for sale Finally, Ethernet has not been designed for TDMA networking, but for packet-switched communication in non-critical networks. Ideally, deterministic Ethernet  would allow synchronous (circuit-switching) and asynchronous  (packet-switching) communication for any type of standard, mission-critical and real-time applications. It is possible to integrate different types of traffic in one network, by simply adding Layer 2 QoS enhancements. Different traffic classes can be integrated in one Ethernet network to support unified Ethernet communication In this case, standard LAN, low-jitter f 14 tomcat for sale and low-latency applications can use shared communication resource (see image below). Logical f 14 tomcat for sale links/data streams with different QoS pass through Ethernet physical layer (e.g. 100BASE-TX) Deterministic Communication In the real-world, the term determinism can be selectively used in one or more dimensions, e.g. we talk about very deterministic ( defined max. latency )! or more deteministic ( minimized latency, in most cases ) communication. Ideally, strictly deterministic communication is defined as: full control of jitter, constant message latency, repeatable f 14 tomcat for sale message order,  and related to synchronous TDMA communication, and not considered a standard Ethernet capability.  Fortunately, Ethernet is not a monolithic standard – it is a family of frame-based networking LAN/MAN technologies and can be extended by additional Layer 2 Quality-of-Service (QoS) enhancements to satisfy different industry- and application-specific requirements. f 14 tomcat for sale By using those otherwise transparent network services, distributed applications can advance their real-time capability and deterministic operation.
As an example, VLAN and IEEE802.1Q are typical widely used QoS enhancements for priority-based traffic which, in conjunction with limited bandwidth use (i.e., <10% of available bandwidth), support f 14 tomcat for sale more predictable network operation, but still without any absolute guarantees for temporal performance and determinism. This is called “more deterministic” communication, and does not represent a real advantage for time-critical embedded systems, which require predictable or lossless communication in all system operation scenarios (including faults).
QoS Layer 2 Services f 14 tomcat for sale such as SAE AS6802 f 14 tomcat for sale allow strict determinism f 14 tomcat for sale with full control of jitter and fixed latency (synchronous TDM-type communication), while fully supporting asynchronous Ethernet traffic in parallel.  This type of capability enables unified networking f 14 tomcat for sale and emulation of circuit-switching over packet-switched networks, and full isolation of synchronous and asynchronous traffic. The system synchronization service is one part of SAE AS6802 standard ( compare IEEE1588 to SAE AS6802 synchronization ). Together with other Layer 2 rate-constrained/time-sensitive (e.g. IEEE DCB , ARINC664/AFDX or IEEE AVB/TSN ), or priority-based VLAN services it is possible to design f 14 tomcat for sale Ethernet networks for lossless, low-jitter, low-latency and standard LAN applications. By doing so, Ethernet covers all types of determinism and represents a unified networking technology. - Deterministic Unified Ethernet .